Devonian period


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Devonian period

a geological period lasting from about 415 to 370 million years ago. Many freshwater fish existed during this period and plants became established on land. True seed plants evolved and lycopods reached the size of trees. Amphibians evolved, the first known insects, spiders and mites occurred and most graptolites became extinct. Britain still lay south of the equator with the Thames at 10 °S. See GEOLOGICAL TIME.
References in periodicals archive ?
In the Devonian period, Waters explained, the world was experiencing super greenhouse climate conditions.
The Witpoort Formation strata at Waterloo Farm were deposited towards the end of the Famennian age of the Late Devonian period, approximately 360 million years ago.
Their fossils date from the Devonian period, about 400 million years ago, when early insects, frogs, and fishes populated the world, but birds and mammals had not yet appeared.
From the following Cambrian period the country lay under the sea, a sea which from fossil records contained shellfish, worms and armoured trilobites, woodlouse look-a-likes which skimmed along the sea bed scavenging foo The Devonian Period (360-408 million years ago) can be found represented in rocks in the north of the county and were laid down in a period when north Warwickshire consisted of wide river deltas, home to large bottom- feeding armoured fish.
Creatures with limbs and digits rather than fins had evolved from fish by the end of the Devonian period, about 365million years ago.
And a newly discovered fossil of a worm that lived in the Devonian period, about 400 million years ago, shows that its body grew in excess of a meter in length, and it had a terrifying large (relatively speaking, of course) mouth that was over a centimeter long.
Washington, June 4 ( ANI ): Researchers from the University of Valencia and the Natural History Museum of Berlin have studied the fossilised remains of scales and bones found in Teruel and the south of Zaragoza, concluding that they belong to a new fish species called Machaeracanthus goujeti that lived in that area of the peninsula during the Devonian period.
Inland, the Windjana and Geikie gorges cut through a fossil reef system that is one of only four places on Earth that contains evidence of coral reefs from the Devonian period. The Gogo fossil sites are one of the world's most important early vertebrate fossil locations.
The warm climate and floods of the Devonian period produced fishes, ammonoids, and reefs but it also accommodated two of the biggest mass extinction events ever.
When Sugimoto began photographing undersea dioramas of the Devonian period (350 million years ago), it occurred to him that the trilobites, squids, and sea lilies had all been re-imagined from their fossils.
An array of interesting rock features can be found here, which can help to interpret the processes of the Devonian Period (400 million years ago)